IS46DR16640C datasheet(8/49 Pages) ISSI

8 / 49 page

Integrated Silicon Solution, Inc. — www.issi.com

Rev. 00A

6/4/2013

IS43/46DR81280C, IS43/46DR16640C

Symbol

Parameter

Rating(1,2,3)

Units

TOPER

Commercial Temperature

Tc = 0 to +85

Industrial Temperature,

Tc = -40 to +95

Automotive Temperature (A1)

Ta = -40 to +85

Automotive Temperature (A2)

Tc = -40 to +105

Ta = -40 to +105

Operating Temperature Condition

ODT DC Electrical Characteristics

PARAMETER/CONDITION

SYMBOL

MIN

NOM MAX

UNITS NOTES

Rtt effective impedance value for EMR(1)[A6,A2]=0,1; 75 Ω

Rtt1(eff)

Rtt effective impedance value for EMR(1)[A6,A2]=1,0; 150 Ω Rtt2(eff)

120

150

180

Rtt effective impedance value for EMR(1)[A6,A2]=1,1; 50 Ω

Rtt3(eff)

Deviation of VM with respect to VDDQ/2

ΔVM

- 6

+ 6

Notes:

1. Test condition for Rtt measurements

Measurement Definition for Rtt(eff): Apply VIH (ac) and VIL (ac) to test pin separately, then measure current I(VIH (ac)) and I( VIL

(ac)) respectively. VIH (ac), VIL (ac), and VDDQ values defined in SSTL_18

Rtt (eff)

Vih (ac) - Vil (ac)

I(Vih (ac)) - I(Vil (ac))

Measurement Definition for VM: Measure voltage (VM) at test pin (midpoint) with no load.

ΔVM = [(2 x VM / VDDQ) - 1] x 100%

Notes:

1. Tc = Operating case temperature at center of package

2. Ta = Operating ambient temperature immediately above package center.

3. Both temperature specifications must be met.

Thermal Resistance:

Package

Substrate

Theta-ja

(Airflow = 0m/s)

Theta-ja

(Airflow = 1m/s)

Theta-ja

(Airflow = 2m/s)

Theta-jc

Units

60-ball BGA

4-layer

35.8

32.0

29.8

5.9

C/W

84-ball BGA

4-layer

33.9

30.3

28.3

5.7

C/W

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